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Source Span Laravel Package
scssphp/source-span
Tiny PHP utility used by scssphp to track and report source spans/locations in parsed code. Helps map errors, warnings, and generated output back to the original input with line/column precision for better debugging and tooling.
scssphp/source-span is a small utility package for tracking source spans—precise start/end positions within a source string—commonly used by parsers and compilers. It helps attach reliable location metadata to tokens, AST nodes, and errors, making diagnostics and tooling more accurate.
Designed for lightweight integration in PHP projects (notably SCSS parsing workflows), it provides simple primitives for representing positions and ranges without pulling in heavy dependencies.
- Represent positions (line/column/offset) and spans (start–end)
- Create consistent error reporting with exact source locations
- Enable richer debugging and diagnostics in parsers
- Minimal, focused API with low overhead
Frequently asked questions about Source Span
- Can scssphp/source-span be used in Laravel for SCSS parsing or error reporting?
- While Laravel primarily relies on Node.js tools like Laravel Mix for SCSS processing, this package could be useful in custom PHP-based pipelines where you need precise source location tracking for SCSS or other languages. It’s not a direct replacement for Laravel’s default asset workflows but works well for niche debugging or parser integrations.
- How do I install scssphp/source-span in a Laravel project?
- Use Composer: `composer require scssphp/source-span`. No Laravel-specific setup is required—it’s a standalone utility. If integrating with a custom SCSS parser, ensure your PHP environment supports the package’s minimal dependencies (no heavy frameworks).
- Does this package support Laravel’s asset compilation pipeline (e.g., Mix/Vite)?
- No, this package is designed for PHP-based parsing/compilation, not Node.js pipelines like Laravel Mix or Vite. For SCSS in Laravel, stick to Laravel Mix’s built-in SCSS support or PostCSS plugins. This utility is for custom PHP tools needing source spans.
- What Laravel versions are compatible with scssphp/source-span?
- This package has no Laravel-specific dependencies, so it works with any Laravel version (5.5+) as long as your PHP environment (7.4+) meets its requirements. It’s framework-agnostic but useful in Laravel for custom parsing logic.
- How can I use source spans to improve error messages in a Laravel app?
- Attach spans to tokens or AST nodes during parsing, then use them to generate errors with exact line/column references. For example, if parsing a custom config file, map validation errors back to the original input using `SourceSpan::create($startPos, $endPos)`.
- Are there alternatives to scssphp/source-span for source location tracking in PHP?
- For Laravel, consider PHP’s built-in `Exception` with file/line context or libraries like `symfony/error-handler` for stack traces. For parsing, `php-parser` or `nikic/php-parser` offer AST tools with location tracking. This package is lighter but niche for SCSS/parser use cases.
- Will this package slow down my Laravel application in production?
- No, it’s optimized for low overhead. Source spans are only created during parsing/compilation, not runtime. In production, ensure you’re not generating spans unnecessarily—use them sparingly for diagnostics or errors.
- Can I use scssphp/source-span to track locations in Blade templates?
- Blade templates are preprocessed by Laravel, so this package isn’t directly applicable. For Blade debugging, use Laravel’s built-in error reporting or tools like `laravel-debugbar`. This utility is for raw source strings, like SCSS or custom syntax.
- How do I test source span accuracy in a Laravel unit test?
- Mock a parser that emits spans, then assert their line/column/offset values against known inputs. For example, parse a test SCSS string, verify spans match expected positions, and check error messages include correct locations.
- Does scssphp/source-span work with Laravel’s queue system for async parsing?
- Yes, but ensure spans are serialized (e.g., with `json_encode`) if passed between processes. The package itself is stateless—just track positions during parsing and attach them to jobs or results as needed.
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